一道从字符串中提取字符
public class GoodCode{//假如有字符串“6sabcsssfsfs33” ，//用最有快速的方法去掉字符“ab3”，不能用java内置字符串方法（indeOf,substring,replaceAll等）？ public void isGood(){String str = "6sabcsssfsfs33";char c1 ='a';char c2 ='b';char c3 ='3';char[] c = str.toCharArray();StringBuilder sl = new StringBuilder();for(char temp:c){if(temp != c1 && temp !=c2 && temp !=c3)sl.append(temp);}System.out.println(sl.toString());}public static void main(String[] args){GoodCode g = new GoodCode();g.isGood();}}
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